ZyXEL Communications Internet Security Gateway ZyWALL 2 Series - Manual (Page 274)

ZyWALL 2 Series User’s Guide
15-28 Certificates
Table 15-12 Trusted Remote Host Details
LABEL DESCRIPTION
Key Algorithm This field displays the type of algorithm that was used to generate the certificate’s
key pair (the ZyWALL uses RSA encryption) and the length of the key set in bits
(1024 bits for example).
Subject Alternative
Name This field displays the certificate’s owner‘s IP address (IP), domain name (DNS) or
e-mail address (EMAIL).
Key Usage This field displays for what functions the certificate’s key can be used. For
example, “DigitalSignature” means that the key can be used to sign certificates
and “KeyEncipherment” means that the key can be used to encrypt text.
Basic Constraint This field displays general information about the certificate. For example, “Subject
Type=CA” means that this is a certification authority’s certificate and “Path
Length Constraint=1” means that there can only be one certification authority in
the certificate’s path.
MD5 Fingerprint This is the certificate’s message digest that the ZyWALL calculated using the MD5
algorithm. You cannot use this value to verify that this is the remote host’s actual
certificate because the ZyWALL has signed the certificate; thus causing this value
to be different from that of the remote hosts actual certificate. See section 15.13.1
for how to verify a remote host’s certificate.
SHA1 Fingerprint This is the certificate’s message digest that the ZyWALL calculated using the
SHA1 algorithm. You cannot use this value to verify that this is the remote host’s
actual certificate because the ZyWALL has signed the certificate; thus causing this
value to be different from that of the remote hosts actual certificate. See section
15.13.1 for how to verify a remote host’s certificate.
Certificate in PEM
(Base-64) Encoded
Format This read-only text box displays the certificate or certification request in Privacy
Enhanced Mail (PEM) format. PEM uses 64 ASCII characters to convert the binary
certificate into a printable form.
You can copy and paste the certificate into an e-mail to send to friends or
colleagues or you can copy and paste the certificate into a text editor and save the
file on a management computer for later distribution (via floppy disk for example).
Export Click this button and then Save in the File Download screen. The Save As screen
opens, browse to the location that you want to use and click Save.
Apply Click Apply to save your changes back to the ZyWALL. You can only change the
name of the certificate.
Cancel Click Cancel to quit configuring this screen and return to the Trusted Remote
Hosts screen.